Cooling structure for magnet-equipped reactor

Abstract

A cooling structure for a magnet-equipped reactor includes: a magnet-equipped reactor ( 60 ) having a core ( 61 ) around which a coil ( 70 ) is wound, and a magnet ( 75 ) arranged to contact the core ( 61 ); and a cooling member ( 51 ) arranged to contact the magnet ( 75 ) of the magnet-equipped reactor ( 60 ) to cool the magnet ( 75 ).

The invention claimed is: 
     
       1. A cooling structure for a magnet-equipped reactor, the cooling structure comprising:
 a magnet-equipped reactor having a core around which a coil is wound, and a pair of permanent magnets arranged to contact the core; and 
 a cooling member which contacts the magnets of the magnet-equipped reactor to cool the magnet, wherein the cooling member includes 
 a plurality of refrigerant passages through which refrigerant flows, and 
 a plurality of grooves, each groove positioned above one of the plurality of refrigerant passages, and 
 wherein each magnet of the pair of magnets is fitted in one of the plurality of grooves formed in the cooling member. 
 
     
     
       2. The cooling structure for the magnet-equipped reactor of  claim 1 , wherein the cooling member contacts both the pair of magnets and the coil wound around the core to cool both. 
     
     
       3. The cooling structure for the magnet-equipped reactor of  claim 1 , wherein the cooling member includes a heat transfer part arranged to contact the magnet to exchange heat with the refrigerant in the refrigerant passage. 
     
     
       4. The cooling structure for the magnet-equipped reactor of  claim 3 , wherein a temperature of the refrigerant flowing through a refrigerant passage is lower than a dew point temperature of air around the cooling member. 
     
     
       5. The cooling structure for the magnet-equipped reactor of  claim 3  or  4 , wherein each of the plurality of refrigerant passages is formed in a refrigerant pipe buried in the heat transfer part. 
     
     
       6. A cooling structure for a magnet-equipped reactor, the cooling structure comprising:
 a magnet-equipped reactor having a core around which a coil is wound, and a pair of permanent magnets arranged to contact the core; and 
 a cooling member which contacts the magnets of the magnet-equipped reactor to cool the magnets, wherein 
 the cooling member includes a heat transfer part, and a plurality of refrigerant passages through which refrigerant flows, the plurality of refrigerant passages being form within the heat transfer part; 
 each magnet of the pair of magnets is disposed so as to reach a pair of opposing portions of the core sandwiching a magnet gap, such that a largest surface of each magnet is flush with a surface of the core adjacent to the cooling member and each magnet is arranged above at least one of the plurality of refrigerant passages, and 
 a flat surface of the heat transfer portion contacts the largest surface of the magnet and the surface of the core adjacent to the cooling member.